Dry, flaky feet
It could be: Thyroid problems, especially if moisturizer doesn’t help. When the thyroid gland (the butterfly-shaped gland in the base of your neck) goes on the fritz, it doesn’t properly produce thyroid hormones, which control metabolic rate, blood pressure, tissue growth, and skeletal and nervous system development.
“Thyroid problems cause severe dryness of the skin,” says Marlene Reid, DPM, a foot specialist in Naperville, Illinois. “When we see cracking on the feet, or if moisturizer doesn’t improve dryness over a few days, we usually refer patients to their primary doctor to make sure their thyroids are OK.” Brittle toenails can also signal thyroid complications.